EP 2459960 A4 20170125 - MEASURING APPARATUS, MEASURING METHOD, AND PROGRAM
Title (en)
MEASURING APPARATUS, MEASURING METHOD, AND PROGRAM
Title (de)
MESSVORRICHTUNG, MESSVERFAHREN UND PROGRAMM
Title (fr)
APPAREIL DE MESURE, PROCÉDÉ DE MESURE ET PROGRAMME
Publication
Application
Priority
- JP 2009176525 A 20090729
- JP 2010004802 W 20100728
Abstract (en)
[origin: WO2011013373A1] A measuring apparatus includes a projection control unit configured to cause a projection unit to project, onto an object, a first light pattern with light and dark portions, a second light pattern, which is smaller in distance between the light and dark portions than that of the first light pattern and has a boundary position between the light and dark portions common to the first light pattern, and a third light pattern in which the light and dark portions of the second light pattern are reversed to each other, an acquisition unit configured to acquire a first captured image of the object onto which the first light pattern is projected, a second captured image of the object onto which the second light pattern is projected, and a third captured image of the object onto which the third light pattern is projected, and a calculation unit configured to calculate the boundary position between the light and dark portions of the first captured image based on the second and the third captured image to measure the position of the object.
IPC 8 full level
G01B 11/25 (2006.01); G06T 1/00 (2006.01); G06T 7/00 (2017.01)
CPC (source: EP US)
G01B 11/2536 (2013.01 - EP US); G06T 7/521 (2016.12 - EP US)
Citation (search report)
- [XY] US 3866052 A 19750211 - DI MATTEO PAUL L, et al
- [XY] US 4259589 A 19810331 - DIMATTEO PAUL, et al
- [Y] US 6208416 B1 20010327 - HUNTLEY JONATHAN MARK [GB], et al
- [Y] JP 2006064454 A 20060309 - FUJI XEROX CO LTD
- [Y] JP 2002031517 A 20020131 - ASAHI OPTICAL CO LTD
- See references of WO 2011013373A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011013373 A1 20110203; CN 102472613 A 20120523; CN 102472613 B 20140709; EP 2459960 A1 20120606; EP 2459960 A4 20170125; EP 2459960 B1 20191113; JP 2011047931 A 20110310; JP 5631094 B2 20141126; US 2012133954 A1 20120531; US 9046355 B2 20150602
DOCDB simple family (application)
JP 2010004802 W 20100728; CN 201080033779 A 20100728; EP 10804124 A 20100728; JP 2010170799 A 20100729; US 201013387653 A 20100728